Updated 19th September 2013
An undescended, open 70cm x 70cm hole which opens up inside and appears about 6m deep. It's "not possible to see all the walls for passages". There may be a route on at the base under an overhang.
Reference: anon., 2005b (Easter & summer logbook); Corrin
Juan, 2006a; anon., 2009a (Easter logbook); anon., 2013d (summer logbook)
Entrance pictures: Looking into the hole
Detailed Survey :
On area survey: